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selftests/x86/syscall_nt: Add more flag combinations 

Add EFLAGS.AC to the mix.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/12924e2fe2c5826568b7fc9436d85ca7f5eb1743.1593191971.git.luto@kernel.org
This commit is contained in:
Andy Lutomirski 2020-06-26 10:21:14 -07:00 committed by Thomas Gleixner
parent ffae641f57
commit e4ef7de160
1 changed files with 15 additions and 0 deletions
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15
tools/testing/selftests/x86/syscall_nt.c
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@ -73,6 +73,12 @@ int main(void)
printf("[RUN]\tSet NT and issue a syscall\n");
do_it(X86_EFLAGS_NT);
printf("[RUN]\tSet AC and issue a syscall\n");
do_it(X86_EFLAGS_AC);
printf("[RUN]\tSet NT|AC and issue a syscall\n");
do_it(X86_EFLAGS_NT | X86_EFLAGS_AC);
/*
* Now try it again with TF set -- TF forces returns via IRET in all
* cases except non-ptregs-using 64-bit full fast path syscalls.
@ -80,8 +86,17 @@ int main(void)
sethandler(SIGTRAP, sigtrap, 0);
printf("[RUN]\tSet TF and issue a syscall\n");
do_it(X86_EFLAGS_TF);
printf("[RUN]\tSet NT|TF and issue a syscall\n");
do_it(X86_EFLAGS_NT | X86_EFLAGS_TF);
printf("[RUN]\tSet AC|TF and issue a syscall\n");
do_it(X86_EFLAGS_AC | X86_EFLAGS_TF);
printf("[RUN]\tSet NT|AC|TF and issue a syscall\n");
do_it(X86_EFLAGS_NT | X86_EFLAGS_AC | X86_EFLAGS_TF);
return nerrs == 0 ? 0 : 1;
}